Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

talk client initiates a rendezvous by sending a CTL_MSG of type

LOOK_UP to the server. This causes the server to search its invita-

tion tables for an existing invitation for the client. If the lookup

fails, the caller sends an ANNOUNCE message, causing the server

to broadcast an announcement on the callee’s login ports

requesting contact. When the callee responds, the local server

responds with the rendezvous address, and a stream connection is

established through which the conversation takes place.

Options

-d Write debugging information to the syslogd logfile.

-p Log malformed packets to /var/log/talkd.packets.

tar

tar [options] [tarfile] [other-files]

Copy files to or restore files from an archive medium. If any files are

directories, tar acts on the entire subtree. Options need not be

preceded by - (though they may be). The exception to this rule is

when you are using a long-style option (such as --modification-

time). In that case, the exact syntax is:

tar --long-option -function-options files

For example:

tar --modification-time -xvf tarfile.tar

Function options

You must use exactly one of these, and it must come before any

other options:

-c, --create

Create a new archive.

-d, --diff, --compare

Compare the files stored in tarfile with other-files. Report any